Enter a threshold value for the selected output response to see the percentage of designs that would satisfy the constraint; this percentage is known as the reliability. The remaining percentage indicates the probability of failure.

Plots the relationship between the desired threshold and the reliability of the system. Refer to the vertical axis to locate a desired reliability and find the corresponding x-axis value of the curve to identify the required threshold. For example, "To have 95% reliability I would have to design this value." You can also find a threshold from the x-axis and locate the corresponding reliability. For example, "91% of my designs are below X value". The latter use case is more common.